Question

Find the value of the middle term of the A.P -6,-2,2,-.....,58. *

Answer 1

answer

26

explanation

-6,-2,2,.....58.

a=-6

d=4

Last term An=58

An=a+(n-1)d

58=-6+(n-1)4

64=(n-1)4

16=n-1

n=17

now middle term is (n+1)/2=9

middle term=-6+(9-1)4

=26